Cie. de Saint-Gobain SA, Asahi Glass Co., and a Nippon Sheet Glass Co. unit were fined a record 1.38 billion euros ($1.7 billion) by the European Union over claims the companies fixed the price of car windows.

Saint-Gobain, Europe's largest building-materials supplier, was fined 896 million euros, the highest against a single company, the European Commission said in a statement today. Asahi Glass was fined 113.5 million euros, Nippon's Pilkington unit 370 million euros. A fourth company, Belgium's Soliver, got a 4.4 million-euro penalty.

The penalties were increased because the companies are repeat offenders, the commission said. Saint-Gobain, Pilkington and two competitors were fined a total of 487 million euros for participating in a separate cartel to set the prices of glass used in the construction industry. Saint-Gobain shares fell as much as 4.4 percent.

``The fine is significantly higher than expected,'' said Tim Cahill, analyst at Davy Stockbrokers in Dublin with a ``focus list'' rating on the stock. ``They're going to resist and appeal, but experience tells me that these fines are generally upheld.''

Saint-Gobain shares fell 21 cents to 29.49 euros in Paris trading as of 12:37 p.m. The stock has lost 56 percent this year.

`Excessive'

The penalties against the four companies are the largest ever for a single cartel. The EU imposed a 992.3 million-euro fine in February 2007 against five elevator makers for price- fixing.

Saint-Gobain , which is based near Paris, called the penalty ``excessive and disproportionate'' and plans to appeal the decision to EU courts in Luxembourg, spokeswoman Sophie Chevallon said by telephone interview. The fine represents about 95 percent of annual revenue at the company's car-glass unit in Europe and the profit of ``several'' decades, she said.

The French company has said it set aside 560 million euros to cover possible EU fines in the case.

Hiroyuki Wakasugi, a spokesman for Asahi Glass, and Kazumitsu Fujii, a spokesman for Nippon Sheet Glass, both declined to comment, saying they had received a notice of the fine.

The commission claims the companies held regular discussions from 1998 through 2003 at hotels and airports in European cities to allocate sales of glass to automobile manufacturers.

`Cheated' Car Buyers

``These companies cheated the car industry and car buyers for five years in a market worth 2 billion euros in the last year of the cartel, EU Competition Commissioner Neelie Kroes said in the statement. ``The overall fines are high because of the large market, the seriousness of the case, and Saint- Gobain's earlier offences.''